Objective To obtain the data base of dietary cadmium exposure level in Shanghai adult residents, and to estimate its risk to them.
Methods Data that reflect the concentration of cadmium in food were collected from stratified random sampling monitoring programs in Shanghai involved 1 680 food samples in 16 categories. Food consumption data were obtained from multi-stage sampling survey of dietary intake in 1 368 Shanghai adult residents. The point estimates of dietary exposure assessment of chemicals in food method recommended by World Health Organization was applied for dietary exposure assessment of cadmium in food for this survey.
Results The average and median dietary cadmium exposure of Shanghai adult residents per week were estimated to be 0.149 4 mg per person and 0.032 4 mg per person, reached 34.56% and 7.50% of provisional tolerable weekly intake (PTWI). The upper 90th percentile (P90) dietary intake and the P90 maximun of dietary cadmium exposure of these people per week were estimated to be 0.287 9 mg per person and 0.937 2 mg per person, reached 66.59% and 216.80% of PTWI respectively.
Conclusion Although the level of dietary cadmium exposure of Shanghai adult residents was usually lower than PTWI, it should be decreased to a further lower level.
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